Question

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A step function consisting of four line segments is plotted in quadrant 1 of a coordinate plane.
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The cost for shipping by the Boston Mailing Company is based on the amount that a customer spends. For customers spending under $50, the shipping rate is $10; for $50 to under $100, the shipping rate is $7; for $100 to under $140, the shipping rate is $4; for $140 and over the shipping rate is $2. What domain interval will have a shipping rate of $4?

(1 point)

100<s<140


100≤s<140


100<s≤140


50≤s<100

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Answer 1

100≤s<140

Explanation: "100 to under 140" means s is at least 100 but less than 140, which is 100 ≤ s < 140.